/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package com.badlogic.gdx.physics.box2d;

import com.badlogic.gdx.math.Vector2;

/**
 * A circle shape.
 *
 * @author mzechner
 */
public class CircleShape extends Shape {
	/*JNI
#include <Box2D/Box2D.h>
	 */

    /**
     * Returns the position of the shape
     */
    private final float[] tmp = new float[2];
    private final Vector2 position = new Vector2();

    public CircleShape() {
        addr = newCircleShape();
    }

    protected CircleShape(long addr) {
        this.addr = addr;
    }

    private native long newCircleShape(); /*
		return (jlong)(new b2CircleShape( ));
	*/

    /**
     * {@inheritDoc}
     */
    @Override
    public Type getType() {
        return Type.Circle;
    }

    public Vector2 getPosition() {
        jniGetPosition(addr, tmp);
        position.x = tmp[0];
        position.y = tmp[1];
        return position;
    }

    /**
     * Sets the position of the shape
     */
    public void setPosition(Vector2 position) {
        jniSetPosition(addr, position.x, position.y);
    }

    private native void jniGetPosition(long addr, float[] position); /*
		b2CircleShape* circle = (b2CircleShape*)addr;
		position[0] = circle->m_p.x;
		position[1] = circle->m_p.y;
	*/

    private native void jniSetPosition(long addr, float positionX, float positionY); /*
		b2CircleShape* circle = (b2CircleShape*)addr;
		circle->m_p.x = positionX;
		circle->m_p.y = positionY;
	*/
}
